Here's why:
* Global Threat: The Grand High Witch isn't just targeting a few kids, she wants to wipe out every single child in the world. This makes the problem incredibly serious and urgent.
* Hidden Enemy: The witches are disguised as ordinary women, making them a hidden and dangerous threat. They are constantly lurking in the shadows, waiting for the perfect moment to strike.
* Personal Impact: The protagonist, Bruno, is directly targeted by the witches and must fight for his own survival. His encounters with the witches highlight the personal cost of their evil plan.
* Lack of Resources: Bruno is a young boy facing a powerful and organized organization. He has limited resources and must rely on his wit and courage to overcome the odds.
Ultimately, the biggest problem in "The Witches" is the very existence of the witches and their ambition to wipe out all children. Bruno's journey is about overcoming this threat and exposing the true nature of the witches to the world.